131297 has 2 divisors, whose sum is σ = 131298. Its totient is φ = 131296.
The previous prime is 131293. The next prime is 131303. The reversal of 131297 is 792131.
131297 is nontrivially palindromic in base 15.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 87616 + 43681 = 296^2 + 209^2 .
It is an emirp because it is prime and its reverse (792131) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 131297 - 22 = 131293 is a prime.
It is a Chen prime.
It is an Ulam number.
It is not a weakly prime, because it can be changed into another prime (131293) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65648 + 65649.
It is an arithmetic number, because the mean of its divisors is an integer number (65649).
2131297 is an apocalyptic number.
It is an amenable number.
131297 is a deficient number, since it is larger than the sum of its proper divisors (1).
131297 is an equidigital number, since it uses as much as digits as its factorization.
131297 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 378, while the sum is 23.
The square root of 131297 is about 362.3492790113. The cubic root of 131297 is about 50.8258832284.
It can be divided in two parts, 13 and 1297, that multiplied together give a palindrome (16861).
The spelling of 131297 in words is "one hundred thirty-one thousand, two hundred ninety-seven".
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